We March for Macragge! Achievement in PowerWash Simulator

This is completed during the first job of the DLC, the Land Raider. You need to clean the Ultramarines 2 plaque before anything else. This plaque can be found on the hood of the Raider. Make sure you completely clean it, including the bottom, sides, and top edges. You can pause the game and select it from the to do list to highlight it in game.

See the video below for all job specific achievements in this DLC!